Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5459859 | Journal of Alloys and Compounds | 2017 | 15 Pages |
Abstract
Herein, we report the effect of the high-magnetic-field (HMF) sintering on the structural, electrical and thermal transport properties of the layered Bi2Sr2Co2Oy. Based on the results of x-ray diffraction and microtopography, we find the grains prefer to the oriented growth along the direction of applied magnetic field, leading to a higher textured degree and anisotropy. Correspondingly, the in-plane conductivity increases while the out-of-plane one reduces with increasing sintering magnetic field. At the same time, the in-plane thermopower shows an obvious enhancement after the HMF sintering, which mainly originates in the spin state transition of Co4+ ions. As a result, a remarkable enhancement of the in-plane thermoelectric figure-of-merit is obtained in the sample after the HMF sintering (8Â T).
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yanan Huang, Bangchuan Zhao, Shuai Lin, Yuping Sun,